Iqokwe njenge-UNS N08020, i-Alloy 20 (eyaziwa nangokuthi “Incoloy 020” noma “Incoloy 20”) iyingxubevange ye-nickel-iron-chromium enezengezo zethusi ne-molybdenum. Inokumelana nokugqwala okukhethekile ku-sulfuric acid, i-choloride stress-corrosion cracking, i-nitric acid, ne-phosphoric acid. I-alloy 20 ingaba lula ukushisa noma ifakwe ngendlela ebandayo kuma-valve, ukufakwa kwamapayipi, ama-flanges, ama-fasteners, amaphampu, amathangi, kanye nezingxenye zokushintsha ukushisa. Izinga lokushisa lokwakha elishisayo kufanele libe phakathi kuka-1400-2150°F [760-1175°C]. Imvamisa, ukwelashwa kokushisa kwe-annealing kufanele kwenziwe ebangeni lokushisa lika-1800-1850°F [982-1010°C]. I-alloy 20 isetshenziswa kabanzi ukukhiqiza uphethiloli, amakhemikhali e-organic & inorganic, ukucubungula imithi kanye nemboni yokudla.
1. Izidingo Zokubumba Amakhemikhali
| I-Chemical Composition of Alloy 20,% | |
|---|---|
| I-Nickel | 32.0-38.0 |
| I-Chromiun | 19.0-21.0 |
| Ithusi | 3.0-4.0 |
| I-Molybdenum | 2.0-3.0 |
| Insimbi | Ibhalansi |
| Ikhabhoni | ≤0.07 |
| I-Niobium+tantalum | 8*C-1.0 |
| Mananganese | ≤2.00 |
| Phosphorus | ≤0.045 |
| Isibabule | ≤0.035 |
| I-silicon | ≤1.00 |
2. Mechanical Properties of Alloy 20
I-ASTM B462 Alloy 20 (UNS N08020) ukufakwa komgunyathi namaflange akhiwe.
| Amandla Okuqina, imiz. | Amandla Esivuno, imiz. | Elongation, min. | I-Modulus Encane | |||
|---|---|---|---|---|---|---|
| Mpa | ksi | Mpa | ksi | % | 103ksi | I-Gpa |
| 620 | 90 | 300 | 45 | 40 | 28 | 193 |
3. Izakhiwo zomzimba ze-alloy 20
| Ukuminyana | Ukushisa Okuthize | Ukungazweli Kagesi | I-Thermal Conductivity |
|---|---|---|---|
| g/cm3 | J/kg.°C | µΩ·m | W/m.°C |
| 8.08 | 500 | 1.08 | 12.3 |
4. Amafomu Omkhiqizo kanye Namazinga
| Ifomu Lomkhiqizo | Okujwayelekile |
|---|---|
| Induku, ibha kanye nocingo | I-ASTM B473, B472, B462 |
| Ipuleti, ishidi kanye nomdweshu | I-ASTM A240, A480, B463, B906 |
| Ipayipi elingenamthungo neshubhu | I-ASTM B729, B829 |
| Ipayipi elishiselwe | I-ASTM B464, B775 |
| Ishubhu elishiselwe | I-ASTM B468, B751 |
| Ukufakwa okushiselwe | I-ASTM B366 |
| Ama-flange akhiwe kanye nokufakwa komgunyathi | I-ASTM B462, B472 |
Isikhathi sokuthumela: Oct-23-2020